Activate stop0 and stop1 levels.

Signed-off-by: Cédric Le Goater <clg@kaod.org>
---
 hw/ppc/pnv.c | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/hw/ppc/pnv.c b/hw/ppc/pnv.c
index 30153ad5acea..9d40b006c0af 100644
--- a/hw/ppc/pnv.c
+++ b/hw/ppc/pnv.c
@@ -456,6 +456,16 @@ static void pnv_dt_isa(PnvMachineState *pnv, void *fdt)
                        &args);
 }
 
+static void pnv_dt_power_mgt(void *fdt)
+{
+    int off;
+
+    off = fdt_add_subnode(fdt, 0, "ibm,opal");
+    off = fdt_add_subnode(fdt, off, "power-mgt");
+
+    _FDT(fdt_setprop_cell(fdt, off, "ibm,enabled-stop-levels", 0xc0000000));
+}
+
 static void *pnv_dt_create(MachineState *machine)
 {
     const char plat_compat[] = "qemu,powernv\0ibm,powernv";
@@ -511,6 +521,11 @@ static void *pnv_dt_create(MachineState *machine)
         pnv_dt_bmc_sensors(pnv->bmc, fdt);
     }
 
+    /* Create an extra node for power management on Power9 */
+    if (pnv_is_power9(pnv)) {
+        pnv_dt_power_mgt(fdt);
+    }
+
     return fdt;
 }
 
-- 
2.20.1